Carton



J. A. ZINN, JR

May 22, 1951' CARTON Filed March 25, 1947 2 Sheets-Sheet 1 INVENTOR. 61122115 5 Zz nrz, Jx,

J. A. ZINN, JP.-

May 22, 1951 CARTON 2 Sheets-Sheet 2 Filed March 25, 1947 INVENTOR. Julzzafi (Z Z0277, Jr, i

Patented UNITED STATES ?ATENT O'FFIQE CARTON Julius A. Zinn, Jr., Chicago, Ill.

Application March 25, 1947, Serial No. 737,138

7 Claims.

The present invention relates to improvements in cartons.

An object of the present invention is to provide an improved carton having rigidity and which is efficient in stopping the seeping of material therefrom.

A further object is to provide a carton which, although made of relatively thin gauge material, has strength and good appearance.

' A further object is to provide a blank for an improved carton in which wastage of material is minimized.

A further object is to provide a carton and a blank for forming said carton having the advantage that sealing of the carton may be accomplished without crushing, even though the carton contains only non-rigid material.

A further object is to provide an improved carton well adapted to meet the needs of commercial service.

Further objects will appear as the description proceeds.

Referring to the drawings:

Figure 1 is a view of a blank embodying the principles of the present invention; the blank being shown with that surface uppermost which is to be presented inwardly of the carton;

Figure 2 is a view in perspective of the blank illustrated in Figure 1, having the four side walls or panels thereof assembled in operative position, the top and bottom closures being open;

Figure 3 is a view similar to Figure 2, but with the bottom closure in closed position and showing the top closure at an intermediate stage of assembly;

Figure 4 is a perspective view illustrating the top closure in a later stage of assembly;

Figure 5 shows a completely sealed carton;

Figure 6 is a sectional view taken along the plane indicated by the arrows 6-6 of Figure 5; and

Figure 7 is a sectional view taken along the 'planeindicated by the arrows '!-1 of Figure 5.

Referring first to Figure 1, the numeral ill in dicates a blank which may be of cardboard or the like. The particular blank chosen for illustration is intended for a carton having uniform cross-section throughout its length, with the end closures disposed in right angular relationship with the side walls or panels, although the intype.

" The blank lll' chosen for illustration is generally rectangular incross-section. Said blank is provided with parallel side edges l2 and I3, and between said edges l2 and [3 are crease lines I4, I5, I6 and I1.

Figure 1 shows the surface of the blank 10 which will be presented inwardly of the carton and the crease lines I l, E5, I6 and I! will be ruled into the blank from the upper surface whereby to bias upwardly the parts adjacent to said crease lines, that is, said crease lines bias said parts inwardly of the carton. Such crease lines are represented in Figure 1 by solid lines with dots spaced therealong. Lines ruled into the other side of the blank ID are represented in Figure 1 by solid lines.

Crease line I4 is spaced from the crease line [5, and the crease line It is spaced from the crease line H, a distance approximately equal to the width of the front or rear wall or panel of the carton.

Crease line :4 is spaced from the side edge 12, and the crease line I5 is spaced from the crease line I6, a distance approximately equal to the width of either of the two opposite narrow side walls or panels of the carton.

Spaced between the crease line l1 and the edge I3 is a connector section, which is utilized for securing the blank into a continuous outline, rectangular in cross-section.

The part of the blank it between the edge I2 and the crease line I 4 provides the wall or panel I8, referred to hereinafter as the first wall or panel.

The part of the blank between the crease lines [4 and l5 provides the Wall or panel l9, referred to hereinafter as the second wall or panel.

The part of the blank between the crease lines l5 and 16 provides the Wall or panel 20, referred to hereinafter as the third wall or panel.

The part of the blank between the crease lines It and H provides the wall or panel 2|, referred to hereinafter as the fourth wall or panel.

The part between the crease line I! and the edge I3 is the connector section 22.

The top and bottom edges of the panel is (the first panel) are defined respectively by the crease lines 23 and 24; the top and bottom edges of the panel 59 (the second panel) are defined respectively by the crease lines 25 and 26; the

top and bottom edges of the panel 20 (the third panel) are defined respectively by the crease lines 21 and 23; the top and bottom edges of the panel 2| (the fourth panel) are defined respectively by the crease lines 29 and 30; and the top and bottom edges of the connector section 22 are defined respectively by the crease lines 3| and 32.

For convenience in folding, crease line at the top of the panel 19 will be of a slightly higher level than the crease line 29, which latter crease line will be of a slightly higher level than the crease lines 23 and 2'1, which may be in alignment with each other. The differences in level of the crease lines referred to will be approximately equal to the thickness of the material of the blank id. The crease line 3| will be at a lower level than the crease lines 23 and 27 an amount approximately twice the thickness of the material of the blank I0.

Swingingly connected to the panel l8 (the first panel), along the crease line 23, is the tab 33, which tab is defined by the edge 34 in alignment with the crease line 23, the edge 35 offset inwardly from the edge l2, the edge 36, the edge 37 (which may be in alignment with the edge l2), the edge 38, the edge 39, the slit 4-0 and crease line 4 l. The crease line 4! is disposed in forty-five degree relationship with the crease line 2-3 and communicates with the juncture of crease lines 23 and 14. The intersection of crease line 4| and the slit 4!) lies in the broken line 42a, which is in alignment with the edge 38.

Swingingly mounted at the top of the wall or panel !9 (the second panel) is the flap 4 3, defined by the crease line 25, the crease line 44, the edge 45, the edge 48, the edge 41, and the crease line 48. The edge 45 and crease line 44 will preferably be in alignment with each other, and the edge 4! and the crease line 48 will be in alignment with each other, the edge 45 and crease line 44 on the one side, and the edge 4? and the crease line 43 on the other side being offset inwardly from their respective crease lines l4 and l5. The edge 39 will preferably be offset slightly toward the left from alignment with the crease line H.

Swingingly mounted at the top of the panel 2!! (the third panel) is the tab 49, defined by the crease line 2'5, crease line 55, slit 5!, edge 52, edge 53, edge 54, slit 55, and crease line 56. Said crease lines 54 and 56 are disposed in forty-five degree relationship with the crease line 21 and intersect said crease line 27 at the junctures thereof with the crease lines [5 and I5. The upper extremities of the crease line 5G and '56 terminate approximately at the broken line 42?), which also marks the slits 5i and 55. Broken lines 42a and 42b are in alignment with each other.

Swingingly mounted above the panel 2! (the fourth panel) is the flap 51, defined by the crease line 29, the crease line 58 (which extends up to approximately the bro-ken line 4211) edge 59, edge 60, edge 6!, edge 62, edge 63, edge 64, edge 65, and crease line 66 (which also extends up to approximately the broken line 4211). The edges 59 and 65 communicate with the edges 65 and 64, respectively, at the broken line 61, which is spaced from the edge 62 a distance approximately equal to or a little greater than the spacing of the broken line 42a, from the crease line 23. The edge 61 is disposed in forty-five degree relationship with the edge Bil and the edge 62. The edge 63 is disposed in forty-five degree relationship with the edges 62 and 64.

Swingingly mounted at the top of the connector section 22 is the fiap 68, defined by the crease line 3|, crease line 89, slit Ill, edge H, edgev 12, and edge 13. The crease line 69 communicates with the juncture of the crease lines 31 and IT. The crease line 6-6 and the edge 65 will preferably be in alignment with each other and will be oifset slightly toward the left from the crease line H. The slit 'ifi will be disposed abovethe crease line 3| 9.. distance approximately equal to or slightly less than the spacing between the crease lines 23 and 42a.

The dimension of the cut-out portion bounded by the lines 34, 35 and 35 in the direction parallel with the crease line 23 is sufficient to receive the web H; that is, said dimension is equal to or slightly greater than the length of the slit 10 whereby the web 71 may be received Within said cut-out portion, and tab 33 and flap 5! may be folded down into operative positions without interference.

The crease line 44, crease line 41 and slit 40 bound a web-corner i4 of unclosed approximately right angular triangular contour of which the crease line 4| is the hypotenuse. The crease line 48, crease line 50 and slit 5| bound a web-corner 75 of unclosed approximately right angular triangular contour of which the crease line 50 is the hypotenuse. The crease line 58, crease line 56 and slit 55 bound a web-corner '55 of unclosed approximately right angular triangular contour of which the crease line 55 is the hypotenuse. The crease line 66, slit ill and crease line '69 bound a web-corner H of unclosed approximately right angular triangular contour of which thecrease line 59 is the hypotenuse.

The crease lines 4!, 50, 56 and 63, all represented by plain solid lines, will be ruled into the blank l8 from the under side thereof, that is, from the side which will be presented outwardly of the carton. The other crease lines, represented by solid lines with dots spaced therealong, are reversely ruled into the blank It, that is, are ruled into thesurface of the blank presented upwardly in Figure 1, that is, on the surface which is presented inwardly of the carton.

The part of the blank below the crease lines 24, 26, 2 8, 30 and 32 comprises thestructure forming the bottom closure of the carton. This bottom closure may take any preferred form' The particular structure illustrated is like that represented above the crease lines 23, 25, 21, 29 and 3!. The descriptive matter applying to the upper closure applies as well to the bottom closure as illustrated in Figure 1.

In forming the blank into a carton,,s a id blank will be formed into a tube of rectangular cross-section, the connector section 22 being laid flatwise against the portion of the panel la (the first panel) adjacent to the edge I2. The flap 68 of the connector section will be laid fiatwise against the edge portion of the tab 33. sai connectorsection 22 and said flap .58 will beadhesively secured to the panel l8 and tab 33.. the parts assuming the positions illustrated in Figure 2.

As indicated above, any preferred type of bottom closure may beused, although a bottom closure similar to the top closure isillustrated. In any case the bottom closure will be folded into operative position as illustrated in Figure 3.

The tab 33 with the flap 68 secured thereto may then be folded down into right angular relationship with the panel l8. At the same time, the tab 49 will be folded down into right angular relationship with the panel 20, the parts assum ing the positions as illustrated in Figure 3.

,The flap 5! will then be folded down intojflate wise engagement with the tabs 33 and .49 substantially as illustrated in Figure 4.

The web T! will now lie in flatwise engagement with that portion of the flap B8 lying between the crease line 69 and the edge 13. This double fold of material will be received within the'cilt gether and the parts will assume the positions illustrated in Figure 5.

By reason of the web-corners provided by the u webs 14, I5, 16 and 11, and by reason of the cutouts for receiving said web-corners, a sift-proof closure is provided, the sift proofness being promoted by reason of the fact that there is uniformity-of thickness in the closure.

Although a preferred embodiment of the present invention has been described in detail, many modifications will occur to those skilled in the art. It is intended to cover all such modifications which fall within the scope of the appended claims.

What is claimed is:

l. A blank for a carton having crease lines dividing said blank into a first panel, a second panel, a third panel, a fourth panel and a connector section, said first panel and said third panel being provided with tabs swingingly united thereto at the tops thereof, said second panel and said fourth panel and said connector section being provided with flaps swingingly connected thereto at the tops thereof, said flap of said second panel being connected to said tabs through webs of unclosed approximately triangular contour, said flap of said fourth panel being connected to the tab adjacent thereto and to the flap of said connector section through webs of unclosed approximately triangular contour, said tab of said first panel and said flap of said fourth panel being provided with cut-out portions to receive said webs whereby said tabs and said fiaps may be folded down into closing position and provide a closure of substantially uniform thickness.

2. A blank for a carton having crease lines dividing said blank into a first panel, a second panel, a third panel, a fourth panel, and a connector section, said first panel and said third panel being provided with tabs swingingly united thereto at the tops thereof, said second panel and said fourth panel and said connector section being provided with fiaps swingingly connected; thereto at the tops thereof, said flap of said second panel being connected to said tabs through webs of unclosed approximately triangular contour, said flap of said fourth panel being connected to the tab adjacent thereto and to the flap of said connector section through webs of unclosed approximately triangular contour,

.each of said webs being bounded by two crease lines and a slit said tab of said first panel and said flap of said fourth panel being provided with cut-out portions to receive said webs whereby said tabs and said flaps may be folded down into closing position and provide a closure of substantially uniform thickness.

3. A blank for a carton having crease lines dividing said blank into a first panel, a second panel, a third panel, a fourth panel, and a connector section, said first panel and said third panel being provided with tabs swingingly united thereto at the tops thereof, said second panel and said fourth panel and said connector section being provided with flaps swingingly connected thereto at the tops thereof, said flap of said sec- 0nd panel being connected to said tabs through webs of unclosed approximately triangular con,- tour, said flap of said fourth panel being connected to the tab adjacent thereto and to the fiap of said connector section through webs of unclosed approximately triangular contour, each of said webs being bounded by two crease lines and a slit,-the crease lines bounding each of said webs being mutually reversed to bias the material joined by said crease lines in opposite directions said tab of said first panel and said flap of said fourth panel being provided with cut-out portions to receive said webs whereby said tabs and said flaps may be folded down into closing position and provide a closure of substantially uniform thickness.

4. A carton having a first panel, a second panel, a third panel, a fourth panel and a connector section, said connector section being adhesively secured to said first panel, said first and third panels having tabs swingingly united thereto at the tops thereof, said second panel, said fourth panel and said connector section having fiaps I swingingly connected thereto at the tops thereof,

said flap of said connector section being adhesaid second and fourth panels and said flaps of said connector section being connected to said flap of said fourth panel through webs, said tab of said first panel and said flap of said fourth panel being provided with cut-out portions to receive said webs whereby said tabs and said.

flaps may be folded down into closing position and provide a closure of substantially uniform thickness.

5. A carton having a first panel, a second panel, a third panel, a fourth panel and a connector section, said connector section being adhesively secured to said first panel, said first and third panels having tabs swingingly united thereto at the tops thereof, said second panel, said fourth panel and said connector section having flaps swingingly connected thereto at the tops thereof, said flap of said connector section being adhesively secured to the inside of the tab of said first panel, said flap of said second panel being connected to said tab of said first panel, said tab of said third panel being connected to said flaps of said second and fourth panels and said flap of said connector section being connected to said flap of said fourth panel through webs, said tab of said first panel and said flap of said fourth panel being provided with cut-out portions to receive said webs whereby said tabs and said flaps may be folded down into closing position and provide a closure of substantially uniform thickness, each of said Webs being bounded by two crease lines and a slit. 6. A carton having a first panel, a second panel,

a third panel, a fourth panel and a connector section, said connector section beingadhesively secured at said first panel, said first and third panels having tabs swingingly united thereto at the tops thereof, said second panel, said fourth panel and said connector section having flaps swingingly connected thereto at the tops thereof, said flap of said connector section being adhesively secured to the inside of the tab of said first panel, said flap of said second panel being connected to said tab of said first panel, said tab of said third panel being connected to said flaps of said second and fourth panels and said flap of said; connector section being connectedto said fiap-ofsaidiourth panelothrough Webs, said flab ofvlfilstsp-anel and saidfiap ofsaidfourth panel v; being provided without-out portions to receive said webs whereby. said tabs and-said flaps *may be folded down into closing position and uprovidea closure-of substantially uniform thickmess; the crease lines bounding each of said webs being -mutual1y reverseddto biasithe .material joined by-said'crease lines in opposite directions.

:37. .A carton-having a firstpanel, a second panel,

a'third panel, a fourth paneland :aconnector section, said connector section beingcadhesively secured to said first paneL. said first and third panels having tabs:swingingly:united thereto at the tops thereof, said second paneLsaid fourth ,panel and. said connector section having flaps swingingly connected thereto at the .tops thereof,

said flap of said connectorsection being .adhe- (panel being {provided with,; cut-out portions -to 16C81VB said Webs whereby said'tabsaandisaid flaps maybeiolded down into closing position and providela closureo'f substantiallyiuniform thickness, each of said :.webs being boundedby two crease dines-andaslit, one only of the-crease, lines of each of said Webs communicating-with thejunc- 'iture of-nzhe 'top and side edges of 'its adjacent panel.

. JULIUS-A. ZINN,-JR.

REFERENCES err- 1) The following ref erences are of -record' in--the file of this patent:

UNITED ,sTATEs PATENTS Number Name Date ,-;452,164 ;C1ark MaylZ, 1891 681,323 Houghland Aug; 2'1, 1901 -'1,7:23,15O Cannonet a1 Aug. 6, 1929 7 1,921,150 ,Bomberger Aug.=8, 1933 1,987,647 Wellman Jan. 15,1935 2,187,304 Farmer Jan. 16, 1940 FOREIGN PATENTS ,Number Country 1 Date $832,894 France Oct. 4, i938 

